Title
Comparison of Modular Multilevel Converter Based Solid State Transformer for AC/DC Application
Author
Li, Z. (TU Delft DC systems, Energy conversion & Storage)
Qin, Z. (TU Delft DC systems, Energy conversion & Storage) 
Mirzadarani, R. (TU Delft High Voltage Technology Group)
Ghaffarian Niasar, M. (TU Delft High Voltage Technology Group)
Itraj, M.S. (TU Delft Electrical Engineering, Mathematics and Computer Science; Vonk)
Van Lieshout, Lou (Vonk)
Bauer, P. (TU Delft DC systems, Energy conversion & Storage)
Faculty
Electrical Engineering, Mathematics and Computer Science
Date
2023
Abstract
For electrolyzer applications, traditional solutions using line frequency transformers plus rectifiers are bulky, heavy and have low controllability. The Solid State Transformer (SST) could be a promising solution to solve the mentioned issues. This paper compares the semiconductor ratings and capacitance of five different Modular Multilevel Converter (MMC) based Solid State Transformer (SST) topologies. The results show that the DRU (Diode Rectifier Unit)-MMC based topologies have the lowest semiconductor ratings and capacitance. Because of the unidirectional power flow requirement, the source side MMC of Back-to-Back (BtB) MMC based SST could be replaced by DRU, thus the cost is drastically saved. Another interesting finding is that the DRU-MMC energy ripple is much lower than half of the energy ripple in BtB MMC, which is different from HVDC MMC.
Subject
Electrolyzer
Modular Multilevel Converter
Solid State Transformer
To reference this document use:
http://resolver.tudelft.nl/uuid:cfe429d2-ae78-43de-8fe6-6f3de2ec1075
DOI
https://doi.org/10.1109/IECON51785.2023.10312314
Publisher
IEEE
Embargo date
2024-04-03
ISBN
9798350331820
Source
IECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society
Event
49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023, 2023-10-16 → 2023-10-19, Singapore, Singapore
Series
IECON Proceedings (Industrial Electronics Conference), 2162-4704
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
conference paper
Rights
© 2023 Z. Li, Z. Qin, R. Mirzadarani, M. Ghaffarian Niasar, M.S. Itraj, Lou Van Lieshout, P. Bauer